Water-gas producer.



B. SPITZER.

WATER GAS PRODUCER.

APPLXOATION FILED AUG.13, 1906.

981,708, Patented Jan. 17, 1911.

55mm' y 'UNTT STATE PATENT @FFTQE .BERNHARD SPTELER, OF@lfiNKFOB-T-ON-THEPLAIN; GERMANY, ASSIGNOR TO THE CORPORATION ODELL'WILFLEISCHER /VASSERGrS-GESELLSCHAFT M. IB. H., 0F

FRANKFORT-ONTHEMAN, GERMANY.

Application filed August 13, 1906.

To all whom il may concern:

Be it known that BERNHARD Srrrzna, enginer, and resident of 25Schweizerstrasse, Frankfort on the Main, Kingdom elf Prussia, GermanEmpire, have invented new and useful Improvements in Tvlater- GasProducers, orn which the following is a specification.

This invention relates to a watergas e producer and has tor its objectmore particularly to avoid all risk oit explosion and at same time tocheapen the cost et manufacture and render the working oi the apparatusmore simple than heretofore. Vith this object in view, ideas which arepartly known are employed in a new combination.

The invention relates more especially to producers which work on theDellwik system of water-gas generation and which have hitherto beenworked solely with coinpressed air. The producer of this inventionhowever is worked with suction air i (this being a feature that has beenlong known in connection with gas producers), the plant being providedwith a charging device in the form oit a coal ieed hopper erecteddirectly upon the producer, and the gas main leading from said chargingdevice to a fan. A by-pass pipe for the fan is provided for the purposeof heating up and ot keeping the producer hot while at rest. The gratewhich hashitherto usually been employed for such producers has now beendispensed with in a known manner per Se, so that the producer chargerests immediately on the producer bottom or rather the resulting layerof ashes and slag. The steam pipe opens at the top into the pro ducer,while the gas pipe is led olii at the bottom and discharges into thescrubber arranged at a lower level. Here solely, a water seal isprovided, such that the issuing gas is easily able to pass into thescrubber, while the in-drawing ot the air when the producer is beingblown up for heating, results only in causing a rise of the scrub berwater into the said gas pipe. By this means there is provided a generalconstruction which possesses extreme simplicity coupled with safety inoperation. All cutoff devices between the producer and the scrubbertogether with the appurtenant piping and consequently also all thesafety devices hitherto required, are now dispensed Specification ofLetters Patent.

WATER-GAS PRODUCER.

Patented Jan. 17, 1911.

Serial No. 330,520.

with. These cutoff devices, which have hitherto been absolutelynecessary, have (in consequence or' their exposure to the white hotstream of gas) been very liable to suffer from the heat as well as fromthe impurities in the gas (dust, sultureted hydrogen) and they have,therefore been a constant source ot' breakdowns and loss ot' gas. lnfact, when the specially provided safety devices break down or becomedamaged, the cut-olf devices, which are dispensed with according to thepresent invention, have even been the cause ot explosions. instead or"the expensive special blast valve with a relier" arrangement which hashitherto been necessary, a simple slide valve is now sut ticient forcontrolling the admission of the blast during gasification. The costlyreversing and mutual locking of the several valves which have hithertobeen necessary for the purpose of insuring a sate working are alsodispensed with. In addition the iandling is also more under inspectionand more simple than hitherto.

In the drawings Figure l is a vertical section showing 'the constructionof the producer as u whole, und Fig. Q is a. plan oi 'the slide valvecontrolling` the by-pass about the suction fan.

The producer a is filled with the charge of coke Z). The blast entersthrough the pipe c which is tted with a slide valve (Z, whilecommunication with the scrubber c which is at a lower level, isestablished by means of the gas pipe f which extends below the level ofthe water g into the scrubber.

71, is the coal-feed hopper which can be filled when the cover Z: hasbeen opened, and which is emptied by depressing the cone fm by means otthe lever n. The coal-feed hopper has connected to it the pipe Q whichis provided with a sheet metal slide valve p and connected to the fan9*.

s is a by-pass pipe fitted with a sheet metal slide valve t which has alarge opening corresponding to the cross-sectional area of the pipe, andalso a very small opening; it may however be also entirely closed.

u is the steam pipe.

The operation of the apparatus is as tollows :mOn starting, the slidevalve 29 is closed, and the slide valve t is fully opened, so that theresulting gases can escape freely into the uptake. Subsequently, theblast slide valve Z is opened full and also slide valve p, and the fan 1is started, and the slide valve t closed. During gasification, the fanis stopped, and during this period it is advisable for the sake ofeconomy in time to fill the coal-feed hopper. During the slagging7operation the slide valve p is entirely closed and the slide valve t ismoved into a position in which the resulting waste gases can escape onlythrough its very small opening. The same position is chosen when theproducer is stopped over night, but when it is desired to maintain theheat.

in addition to the well known advantages of the absence of a grate, thelight work ot' slagging, the generation of goed water gas containing`little C02 which always issues at the hottest point, there may befurther mentioned that no loss of steam through badly ,shutting gasvalves can occur, because there are none, and that the danger ofpoisoning from water gas passing out at the uptake, is obviated, becauseeven if the Jfeed-hopper fm should shut impert'ectly, only steam andnever water gas, can escape outward because the gas is led away at thebottom at j, and the upper space of the producer is filled only withsteam during gasification. Similarly, during the heating blow, blastgases cannotescape atthe top into the space as has been the casehitherto, because by reason of the suction-working, if there are anyleaky joints and covers although air may be sucked in, gas can neverpass out. For these reasons, in this case, a rather less carefulconstruction of the joints at the upper part of the producer, isallowable than that which was required in the producers hithertoconstructed.

Claims:

1. An air suction generator for the preduction of water gas, having atits upper part a gas outlet provided with a suction tan, a by-pass pipebridging` the inlet and outlet of the fan, valve devices for directingthe passage of the gases or a portion thereof through the by-pass pipe,a hopper tor suppl ying the generator with coal, a steam inlet pipeopening into the top of the generator, and a water sealed dip pipe forestablishing communication between the lower part of the generator andthe scrubber; substantially as described.

Q. An air suction generator' for the production of water gas, having atits upper part a gas outlet provided with a suction i'an, a by pass pipebridging` the intake and outlet et the fan, a slide valve in said pipehaving a small opening therein, a steam inlet pipe, a hopper forsupplying the generator with coal in the upper part of the generator,and a water sealed dip pipe ttor establishing communication between thelower part of the generator and the scrubber; sub` stantially asdescribed.

In testimony, that I claim the foregoing1 as my invention, I have signedmy name in presence of two witnesses.

BERNHARD SPITZER.

`Witnesses JEAN GRUND, ROBERT BHL. i

